Rinnai introduced the Demand Duo™, a commercial hybrid water heating system. The system combines highly-efficient heat exchanger technologies from Rinnai’s recently-launched 199-Btu, Energy Star-certified C199 condensing commercial tankless water heaters with a 119-gallon tank designed to handle the demands of businesses.
Utilizing a total energy core, Greenheck’s new MiniCore energy recovery ventilator provides preconditioned fresh outdoor air for commercial applications ranging from 300 to 1,000 cfm. The total energy core is constructed of a specially processed hydroscopic resin material layered in a cross-flow corrugated structure that separates the supply and exhaust air, ensuring only fresh air is introduced into the indoor space.
The latest version of the Pottorff ECD-545 5-in horizontal blade, wind-driven rain louver comes with updated AMCA CRP ratings. The ECD-545 now has a Class A rating at a core velocity of 886 fpm for the 29 mph, 3 in/hr simulated AMCA Wind-Driven Rain Test.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.